| grievous(adjective, hard, difficult, complex) |
| perturbed(verb, adjective, state, upset, depression) |
| heartrending(adjective, hard, difficult, complex) |
| painful(adjective, hard, difficult, complex) |
| problematic(adjective, hard, difficult, complex) |
| rough(adjective, hard, difficult, complex, painful) |
| tricky(adjective, hard, difficult, complex) |
| trying(adjective, hard, difficult, complex) |
| vexed(verb, adjective, state, worry, excite) |
| agitated(verb, adjective, state, upset, hurt) |
| apprehensive(adjective, upset, hurt, kind, worry) |
| disquieted(verb, adjective, state, upset, hurt) |
| nervous(adjective, upset, rough, excited, uncertain) |
| harassed(verb, adjective, upset, worry, desire) |
| concerned(adjective, upset, kind, excited, uncertain) |
| unquiet(adjective, upset, worry, excite, excited) |
| annoyed(verb, adjective, state, upset, rough) |
| bothered(verb, adjective, state, upset, hurt) |
| ruffled(verb, adjective, state, upset, hurt) |
| tormented(verb, adjective, upset, desire, sad) |